Pickup clearance

I knew this was coming, we`ve been thru it before. I`ll go with what Tom Hoover told me !
3/8'' on a drag engine, 1/4" on a hot street car.
That being said, I have at least 3/8" on a swinging pick up/single line system------


And thats NOT with a stock pick up. If he said that with a stock pick up, he was wrong.